请帮忙,我得到了很多错误。
sub2.cpp:在函数‘int main()’中: sub2.cpp:11:14:错误:从 ‘const char*’ 到 ‘char’ 的无效转换 [-fpermissive] sub2.cpp:12:14:错误:从 ‘const char*’ 到 ‘char’ 的无效转换 [-fpermissive] sub2.cpp:16:17:错误:在‘const’之前需要主要表达式 sub2.cpp:16:36:错误:在‘const’之前需要主要表达式 sub2.cpp:11:6:警告:未使用变量‘outer’[-Wunused-variable] sub2.cpp:12:6:警告:未使用变量‘inner’[-Wunused-variable] make:* [sub2] 错误1
#include <iostream>
#include <string>
#include <cstring>
using namespace std;
char *Subtract(const char *outer, const char *inner);
int main()
{
char outer = "Bookkepper";
char inner = "keep";
char *word = new char[50];
word = Subtract(const char &outer, const char &inner);
cout << word << endl;
return 0;
}
char *Subtract(const char *outer, const char *inner)
{
int olen = strlen(outer);
int first_occ_idx = -1;
for(int i=0; i < olen; i++){
if(strncmp(outer+i, inner,strlen(inner)) == 0){
first_occ_idx = i;
}
}
if(first_occ_idx == -1){
return NULL;
}
int ilen = strlen(inner);
int xx = olen - ilen;
char *newstr = new char[xx];
int idx = 0;
for(int i=0; i < first_occ_idx; i++){
newstr[idx++] = outer[i];
}
for(int i=first_occ_idx+ilen; i < olen; i++){
newstr[idx++] = outer[i];
}
newstr[idx] = '\0';
return newstr;
}